ephemerality, evanescence, fleetingness, fugitiveness, impermanency, momentariness, temporariness, transience, transiency, transitoriness
Early Buddhism dealt with the problem of impermanence in a very rationale manner. This concept is known as anicca in Buddhism, according to which, impermanence is an undeniable and inescapable fact of human existence from which nothing that belongs to this earth is ever free.
Buddhism declares that there are five processes on which no human being has control and which none can ever change. These five processes are namely, the process of growing old, of not falling sick, of dying, of decay of things that are perishable and of the passing away of that which is liable to pass. Buddhism however suggests that escape from these is possible and it’s through Nirvana.
Hinduism also believes in the impermanent nature of life. But it deals with this problem differently. According to Hinduism, impermanence can be overcome by locating and uniting with the center of permanence that exists within oneself. This center is the Soul or the self that is immortal, permanent and ever stable.
According to Hinduism, Atman is the fundamental truth that exists in every being, while at the microcosmic level it is Brahman who is the fundamental and supreme truth of all existence. He who realizes Atman verily becomes Brahman and attains immortality.
The Buddha differed radically with this most fundamental concept of Hinduism and in line with his preaching the early Buddhists did not believe in the existence of a permanent and fixed reality which could be referred to as either God or soul. According to them what was apparent and verifiable about our existence was the continuous change it undergoes.